EMPIRE, 50,000 BtuH Heating Capacity Input, Standing Pilot, Match Lit, Recessed-Mount Gas Wall Heater - 48XH59|GWT50WNAT - Grainger
Sunpak TSH 48-Inch 34,000 BTU Natural Gas Two-Stage Infrared Patio Heater - Stainless Steel - S34 S TSH-NG
Dimplex DGR Wall-Mounted Natural Gas Infrared Heater - Patio Fever
Bluegrass Living Natural Gas Vent Free Blue Flame Gas Space Heater With Blower and Base Feet - 30,000 BTU, T-Stat Control - Model# B30TNB-BB - Factory Buys Direct
30000 BTU Vent Free Radiant Natural Gas Heater - Walmart.com
Sunpak 48-Inch 25,000 BTU Natural Gas Infrared Patio Heater - Black - S25 B-NG : BBQGuys